Rd instruction 1924-a table of Contents

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TABLE 4-1.2


Number of Bedrooms

0 1 2 3 4

Work Center Minimum Frontages in Lineal In.

Sink 18 24 24 32 32

Countertop, each side 15 18 21 24 30

Range or Cooktop Spaces (1) (2) (5) 21 21 24 30 30

Countertop, one side (3) 15 18 21 24 30

Refrigerator Space (4) 30 30 36 36 36

Countertop, one side (3) 15 15 15 15 18

Mixing Countertop 21 30 36 36 42
(1) Where a built-in wall oven is installed, provide an 18 in. wide counter adjacent to it.
(2) A range should not be located under a window nor within 12 in. of window. Where a cabinet is provided above a range, 30 in. clearance should be provided to the bottom of an unprotected cabinet, or 24 in. to the bottom of a protected cabinet.
(3) Provide at least 9 in. from the edge of a range to an adjacent corner cabinet or side wall, and 15 in. from the side of a refrigerator to an adjacent corner cabinet.
(4) Refrigerator space may be 33 in. when refrigerator door opens within its own width.
(5) When a range is not provided, a 30 in. wide space should be provided.
c. Kitchen storage shelf area should be provided in accordance with Table 4-1.3. At least one third of the required area should be located in base or wall cabinets.
(6) A cooking facility and refrigerator should be provided in each rental unit.

RD Instruction 1924-A

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TABLE 4-1.3


SQ. FT. Number of Bedrooms

0 1 2 3 4
Minimum Shelf Area 24 30 38 44 50
Minimum Drawer Area 4 6 8 10 12
401-4.2 Baths
(a) Each dwelling unit should have at least one bathroom containing a lavatory, water closet, and bathtub. Bathrooms should provide for comfortable access to, and use of, each fixture. Bathrooms should be convenient to the bedrooms.
(b) Bathrooms should be provided with the following accessories:
(1) Grab bar and soap dish at tub or shower
(2) Shower curtain rod or enclosure at shower
(3) Toilet paper holder at water closet
(4) Mirror and medicine cabinet or equivalent enclosed storage
(5) Two towel bars
(c) Water impervious wainscot should be provided at walls around showers or tub-showers to a height of 6 ft. from the finish floor.
401-4.3 Laundry
(a) Where common laundry is not provided, space should be provided in each unit for a clothes washing machine equipped with power supply and water and waste piping or a laundry tray.
(b) Where other drying facility is not furnished, space should be provided in each living unit for a dryer equipped with power supply and vent to the outside.

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401-5.1 Bedroom Closets
Each bedroom should have accessible clear hanging space equipped with rod and shelf which meets or exceeds the following:
Double Occupancy Bedrooms Single Occupancy Bedrooms
2' -0" x 5' -0" 2' -0" x 3' -0"
401-5.2 Coat Closet
A 2 ft. x 2 ft. (clear floor area) coat closet should be provided convenient to the entrance.
401-5.3 Linen Storage should be provided as follows:
(a) Minimum shelf area: 10 sq. ft. for 2 bedrooms or less, 15 sq. ft. for 3 or more bedrooms.
(b) Spacing of shelving: Not less than 12 in. o.c.
401-5.4 General Storage
(a) In addition to closets and kitchen storage, each dwelling unit should have a minimum total volume of interior and exterior storage of 200 cu. ft. plus 75 cu. ft. per bedroom.
(b) General storage may be reduced 75 cu. ft. when exterior maintenance is to be performed by other than occupants.
(c) At least one third of the total volume of general storage space provided should be located for the convenient storage of items used outdoors, except for elderly housing.
(d) Each living unit having one or more bedrooms should have at least one closet for general storage or utility purposes located in a conveniently accessible place within the unit. This closet should be at least 6 sq. ft. In area and full room height. The remainder of the general storage may be located in bedroom and coat closets provided this space is in addition to the required closet space.
(e) Common storage should be in a dry area with space divided into lockable compartments or closets for each living unit.

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Where garages or carports are provided, they should be designed to provide space for full size cars as well as for convenient opening of doors and circulation around cars. Their location should provide convenient vehicular access as well as convenient access to living units.
401-7.1 Ceiling heights clear under beams or other obstructions should

be in accordance with Table 4-1.4.

TABLE 4-1.4
Habitable Rooms 7'-6"
Halls within living unit, Baths 7'-0"
Luminous Ceilings

Within living unit 7'-0"

Public Corridor 7'-4"
Sloping Ceilings At least 7'-6" for 1/2 the

room with no portion less than

Public Corridors 7'-8"
Public Rooms 8'-0"
Basements without Habitable

Rooms 6'-8" (6'-4" under girders)

Space and facilities should be provided for convenient access to and circulation within dwellings for occupants and for movement of furniture and supplies. The relationship of rooms within the living unit and the relationship of living units to each other should provide a degree of privacy commensurate with desirable living conditions.

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Entrances should have appropriately sized exterior platforms when access is not from a paved area such as a porch, terrace, garage or carport.
402-3.1 Recommended minimum doorway widths should be:

Public Doors

Main entrance to building 3'-0", 6'-0
for double doors

Secondary public entrance to building 3'-0"

Service entrance to building 2'-8"

Public stairway 3'-0"

Private Doors
Main entrance to living unit 3'-0"

Secondary entrance to living unit 2'8" (5'-0" sliding

glass doors may be

Bathrooms, toilets in living unit 2'-0"

Habitable rooms 2'-6"
402-3.2 A door should be provided at each entrance to a building, living

unit, and required stairway enclosure; within the living unit, a door should be provided at each opening to a bedroom, bathroom, toilet room, and closets.

402-3.3 Locking devices at doors and windows should be as follows:
a. Each exterior doorway or doorway leading to garage areas, public hallways, terraces, balconies, or other areas affording easy access to the premises should be protected by a door which, if not a sliding door, should be equipped with a deadlock using either an interlocking vertical bolt and striker, or a minimum 1/2 in. Throw dead bolt, or a minimum 1/2 in. throw self-looking dead latch. Locks should not require the use of a key for operation from the inside.
b. All sliding doors, first floor and basement windows, and windows opening onto stairways, fire escapes, porches, terraces, balconies, or other areas affording easy access to the premises, should be equipped with a locking device.

RD Instruction 1924-A

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c. Swinging entrance doors to a living unit should be keyed alike.
d. Bathroom, toilet room, and primary bedroom doors should be equipped with a privacy lock which can be opened from the outside in an emergency.
402-3.4 All entrance doors, including storm and screen doors,

opening outward should be provided with a safety door check. Main and secondary public doors should be equipped with a door closer.

402-3.5 When the attic or crawl space contains mechanical equipment, the

access opening and any accompanying areaway should be of sufficient size and shape to permit replacement of the equipment.

402-3.6 Access openings to common attic or crawl spaces of multi-family

housing should not be located within the living units.

The width of corridors at elevators should be greater than the width of the corridor at other locations except where the elevator is serving six living units or less per floor. The increase in width should be at least 20 percent for corridors or hallways less than 5 ft. wide, and at least 12 percent for corridors from 5 ft. to 7 ft. wide.
Each bedroom should have access to a bathroom without an intervening bedroom, kitchen, or principal living or dining area. Bedrooms should not afford the only access to a required bathroom except in one bedroom units. Neither a bedroom nor a bathroom should afford the only access to a habitable room.
402-6.1 Stairways and landings should provide for safe ascent and

descent under normal and emergency conditions and for the transport of furniture and equipment. They should be designed to minimize noise transmission into adjacent living units.

402-6.2 Stairways having three or more risers should have a handrail 30

in. in height on at least one side of the stairways. Handrails should have intermediate rails or ornamental closures which will not allow passage of an object 5 in. or more in diameter.

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Light and ventilation should be provided to achieve a healthful environment within the dwelling and so located as to provide an acceptable degree of comfort. Structural spaces should have natural ventilation to reduce conditions conducive to decay and to release stored heat. Ventilation should be considered for the removal of excessive moisture vapor in living units.
Living units should be designed to provide an acoustically-controlled environment in relation to exterior noise and noise from adjacent living units and public spaces.

405-1.1 Every living unit should be: (a) constructed so as to reduce

fire hazard separated from every other living unit by construction or distance to restrict the spread of fire, and (c) be designed to provide means of safe egress in the event of a fire.
405-1.2 The fire protection recommendations in this section may be more

stringent than the minimum requirements of local building codes and applicable development standards.

405-2 FIRE RESISTANCE RATINGS (One & two family dwellings only)
TABLE 4-5.1

Type of Housing

Construction Detached and Row Houses

Semi-Detached Attached

Party, common walls 1 1-1/2(1) (2)

Exterior lot-line walls 3/4 3/4

Partitions at common 3/4 3/4

entrance halls (1)

Bearing partitions 1/3 1/3

Floor-ceiling assemblies (4) (5)

Roof-ceiling assemblies (4)

Separation between garage and living unit (1) 3/4 3/4

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(1) Combustible walls which are penetrated with electrical outlets or other mechanical devices should have interior (cavity) fire protection.

(2) Walls should extend at least 18 in. above top of roof. See 405-3.1 b for alternate methods.

(3) Supporting walls, beams and columns - 1 hour.

(4) Floor assembles over nonhabitable basements, roof assemblies for detached and semi-detached housing, supporting beams and columns - 1/6 hour.

(5) Floor assemblies not meeting the 1/6 hour fire resistance rating may be acceptable where a single station smoke detector is provided for every level.

405-3 INTERIOR FIRE PROTECTION (One & two family dwellings only)
405-3.1 Party, Common and Lot-Line Walls
(a) Walls should extend the full height of the dwelling without openings from foundation to the roof.
(b) Walls separating row houses may be carried up to the underside of the roof sheathing and sealed tightly in the following conditions:
(1) Where the roof framing and deck are noncombustible and roof covering material is at least Class C Classification (ASTM E108).
(2) Where the roof construction provides one hour protection against sheathing burn through with a Class A brand (tested in accordance with Burning Brand Test of ASTM E08) for width of 6 ft. on each side of the wall.
(c) Plumbing and heating stacks may be placed in party, common and lotline walls where wall construction provides a minimum of one-hour protection on each side of stacks. Penetration of the wall by electrical outlets or recessed cabinets should not be back to back, and there should be a minimum of one-hour protection around penetration.
405-4.1 Flame Spread Limitations
(a) The surface flame spread rating of interior finish materials of walls, ceilings and kitchen cabinets should not exceed 200 determined by an independent testing laboratory or recognized association laboratory.
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(b) Flame spread of kitchen cabinets should apply to combustible cabinet doors, exposed end panels and bottoms and counter tops. Cabinet frame rails, stiles, mullions and toe strips are exempted.
405-4.2 Marking
Except for conventional homogeneous materials whose flame spread characteristics have been determined by test and are in common usage, all finishing materials should be marked to indicate the maximum flame spread rating.
405-5.1 Fire Alarm Systems
(a) Every exit arrangement serving more than eight living units or building, of three stories or more in height should be equipped with a manual fire alarm system. Each floor should have at least one or more manual fire alarm boxes and sounding devices at visible points in the natural paths of escape from fire and near each exit.
(b) Exterior and interior corridor type buildings four or more stories in height should have an alarm system which transmits an alarm automatically to the fire department which is legally committed to serve the area in which the building is located, or to a 24-hour monitoring service inside or outside the building. An annunciator which indicates the fire floor should be located at a central point within the building.
(c) Buildings may have a zoned noncoded alarm system that sounds an alarm on the fire floor, floor below the fire floor and the floor above the fire floor and provision at central monitoring point to activate a general fire alarm.
(d) All fire alarm systems should be electrically supervised.
(e) A smoke detector, which may be a single or multiple station alarm device should be installed in each living unit near the sleeping areas on each floor and on each additional floor of the living unit.
(f) All smoke detectors that control fire doors or elevators should automatically initiate a general fire alarm when activated.
405-5.2 Fire Extinguishing System
(a) For all buildings four stories or more in height, an automatic sprinkler protection system should be provided in

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all corridors, common spaces used by occupants such as dining rooms and lounges, service and utility areas such as maintenance shops, laundries, central boiler rooms and trash collection rooms.
(b) Sprinkler systems should be equipped with an automatic alarm initiation device that will activate the general alarm system for the building.
405-5.3 Equipment and Installation
(a) Fire alarm, smoke detectors and extinguishing equipment should be listed by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment, and whose listing states either that the equipment meets nationally recognized standards or has been tested and found suitable for use in a specified manner.
(b) Smoke detectors should comply with the following standards: Underwriters Laboratories Standard No. 168 for photo-electric type detectors and No. 167 for ionization type detectors.
(c) All smoke detectors should be permanently mounted to a standard electrical outlet box on or adjacent to the ceiling except those which activate fire doors may be incorporated in the door closer.
(d) Installation of fire alarm and extinguishing systems should be in accordance with NEPA No. 72A for fire alarm systems and NEPA No. 13 for sprinkler systems. Spacing of sprinkler heads in corridors should be positioned 15 ft. on maximum centers.
All buildings five stories or 55 ft. or greater in height should be equipped with wet standpipes of number, size and construction in accordance with NFPA No. 14 "Standpipe and Hose Systems" for Class I services.
A master television antenna system should be provided for each multi-family project which consists of twenty or more dwelling units or with three or more floors, and for which cable service (CRTV) has not been installed.
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Guide 2

Appendix A

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